MathSciNet bibliographic data MR1641103 (2000j:20081) 20G10 (19D55 20G35 55P60) Knudson, Kevin P. Relative completions of linear groups over \$\bold Z[t]\$$\bold Z[t]$ and \$\bold Z[t,t\sp {-1}]\$$\bold Z[t,t\sp {-1}]$. Trans. Amer. Math. Soc. 352 (2000), no. 5, 2205–2216. Article

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